NERVOUS SYSTEM SPECIAL SENSE
PERIPHERAL NERVE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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trapezius and sternocleindomastoid movements
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abducens
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accessory
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glossopharyngeal
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hypoglossal
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Explanation:
Detailed explanation-1: -The accessory nerve receives a communication from the cervical plexus, specifically fibers from C2 and C3 for the SCM and C3 and C4 fibers for the trapezius (Brown, 2002). This innervation from the cervical plexus is likely what allows some trapezius function even with a complete SAN palsy.
Detailed explanation-2: -The spinal accessory nerve is a purely motor entity. It innervates both the trapezius and the sternocleidomastoid muscles.
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